Albert Barnes Commentary Zechariah 1:7

"Upon the four and twentieth day of the eleventh month, which is the month Shebat, in the second year of Darius, came the word of Jehovah unto Zechariah the son of Berechiah, the son of Iddo, the prophet, saying," — Zechariah 1:7 (ASV)

On the twenty-fourth day - Exactly five months after the building of the temple was resumed (Haggai 2:15), and two months after Haggai’s last prophecy (Haggai 2:20). The series of visions, leading onward, from the first deliverance from the enemies who oppressed them, to the Coming of Christ, is given as a reward to their first whole-hearted endeavor to restore their worship of Him. The visions are called the “word of the Lord,” because they were prophecy, made visible to the eye, conveying the revelation to the soul, and in part explained by Him.